YAQIN MS-20L EL34 Röhre Bluetooth Digital USB Eingang Leistungsverstärker HiFi Integrierter Verstärker

YAQIN MS-20L EL34 tube BluetoothClass AB Power Amplifier HiFi Integrated Amplifier 100% Brand New

1. Qualcomm Bluetooth chip is fast and stable
It adopts imported Bluetooth module, Qualcomm (QUALCOMM) CSR8675 Bluetooth chip, and supports Bluetooth 5.0 protocol. Support UAT, LDAC, AAC, SBC HD audio transmission format;
2. High gain, glue stick antenna transmits faster and the signal is more stable
The external detachable high-gain glue stick antenna can be effective, strengthen the signal transmission effect, fully improve the transmission performance, and it can be easy to use in a variety of complex environments.
3. Digital audio input
Compared with other models, this machine has added USB digital audio input to support computer, digital broadcasting, tablet and other devices for audio input
4. One-key control is more convenient
Use Japanese ALPS volume encoder and channel automatic reset switch,
Adopt a new upgrade, volume adjustment and input selection in one relay resistance voltage divider MCU numerical control volume to achieve precise volume control
Turn counterclockwise to decrease the volume, turn clockwise to increase
Press the knob down to select the input channel,
The order is: CH1→CH2→>DIG→BT

Feature:
1. The front stage uses two 12AU7/ECC82 and one 12AX7/ECC83 vacuum tube for voltage amplification and driving, and one 6Z4 diode for rectification. Utilizing the unidirectional conductivity of the diode, the alternating current with alternating directions can be converted into a pulsating direct current in a single direction. The combination of two excellent vacuum tubes makes the sound have better resolution and expressiveness, and exerts the soft and warm sound of the tube amplifier. specialty.
⒉. The rear stage uses four EL34 vacuum tubes to do AB1 push-pull power amplification. Push-pull can reduce the quiescent current of the circuit, reduce distortion and increase output power.

technical parameter:
Power amplifier part output power: 32W×2 (8Q)
Frequency response: 10Hz~80KHz (-2dB)
Distortion: ≤1% (at 8Q, 22W)
Signal to noise ratio: ≥93dB (A weighting)
Input sensitivity: ≤260mV
Power consumption: ≤230W
Load impedance: 4Q-8Q
Tube:
Pre-stage: 12AU7/ECC82×2, 12AX7/ECC83×1, 6Z4×1
Post-level: EL34×4
Input terminals: AUX1, AUX2, USB, Bluetooth
Gross weight: about 24.5kg
Net weight: about 22kg
Dimensions: length 400mm, width 355mm, height 220mm

Bluetooth part
Bluetooth version: V 5.0
Bluetooth chip: CSR8675
Audio transmission format: Uat, LDAC, AAC, SBC
Effective distance: ≤10 meters